2. Mostly in phrase, trinum nundinum, the time of three nundinae or market-days; v. nundinus, III.—By the lex Caecilia et Didia, B. C. 98, that a promulgatio trinum nundinum, or a putting up in public for at least seventeen days, should be made of any proposed law before taking a vote on it, Cic. Dom. 16, 41; id. Phil. 5, 3, 8.